Forty-five more than a number
2 answers:
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Answer: $8,925
Step-by-step explanation:
Convert 15% to decimals. You can do this by dividing by 100.
Now, take the total amount of the sales and multiply it by this decimal.
Looks like you just evaluated the summand for the given value of 
, whereas the question is asking you to find the value of the sum for the first terms.
Let
. Then 
is the 
th partial sum.
happens to be the first term in the series, which is why that box is marked correct:
But the next partial sum is not correct:
and this is not the same notion as the second term (which indeed is 0.75) in the series.
Let
But the next partial sum is not correct:
and this is not the same notion as the second term (which indeed is 0.75) in the series.